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Periodic boundary conditions

Posted Feb 6, 2017, 6:48 p.m. EST Modeling Tools & Definitions, Studies & Solvers, Structural Mechanics Version 5.2, Version 5.2a 0 Replies

Noy Cohen
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Hey,

I am trying to solve a representative volume element in a composite material subjected to a uniaxial stretch.
The faces along the x-axis are subjected to periodic displacements. This can be easily achieved by linear extrusion and pointwise constraints.
However, the face along the y-axis must satisfy the following
1) integration(solid.sy,x,-0.5,0.5) = 0
2) integration(solid.sxy,x,-0.5,0.5) = 0
3) solid.sy on the top boundary = solid.sy on the bottom boundary
4) solid.sxy on the top boundary = solid.sxy on the bottom boundary
5) There is periodicity between the top and the bottom boundaries

And here COMSOL solves for the displacements of the boundaries under these constraints.

Does anybody have any idea how these type of traction-free periodic boundary conditions be implemented?

Thanks
0 Replies Last Post Feb 6, 2017, 6:48 p.m. EST
COMSOL Moderator

Hello Noy Cohen

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